From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: Re: [PATCH 15/15] tty: serial: 8250: omap: add dma support Date: Fri, 29 Aug 2014 18:31:51 +0200 Message-ID: <5400AAF7.5060401@linutronix.de> References: <20140815210211.GD9239@atomide.com> <53F5AF0D.5060409@linutronix.de> <20140821184416.GF10066@atomide.com> <53FE3779.5090908@linutronix.de> <20140827202313.GF16006@atomide.com> <20140828082348.GA5413@linutronix.de> <20140828164645.GG16006@atomide.com> <53FF84DF.7080406@linutronix.de> <20140828225454.GM16006@atomide.com> <540048B4.7010807@linutronix.de> <20140829161221.GO16006@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from www.linutronix.de ([62.245.132.108]:48039 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753159AbaH2QcA (ORCPT ); Fri, 29 Aug 2014 12:32:00 -0400 In-Reply-To: <20140829161221.GO16006@atomide.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Tony Lindgren Cc: balbi@ti.com, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Vinod Koul , Greg Kroah-Hartman , Paul Walmsley On 08/29/2014 06:12 PM, Tony Lindgren wrote: > Looks like the paste bug is there for sure, doing off idle and pastin= g > 240 characters to the console can hang the UART RX after few attempts= , > and pasting 16 charactes won't show up at all if the system is idling= =2E > So you may want to play with that too a bit :) Oh. perfect. Please note that we the threshold moved from 16 to 48. However I see that usually we lose a lot of characters before the uart wakes up and does its job. Usually I see a couple characters but sometimes is see broken characters which suggests that the clock was not (yet) perfect. And I managed not get get it woken once. So let me look at this once I am through with the review responses=E2=80= =A6 >=20 > Regards, >=20 > Tony >=20 Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-omap" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: bigeasy@linutronix.de (Sebastian Andrzej Siewior) Date: Fri, 29 Aug 2014 18:31:51 +0200 Subject: [PATCH 15/15] tty: serial: 8250: omap: add dma support In-Reply-To: <20140829161221.GO16006@atomide.com> References: <20140815210211.GD9239@atomide.com> <53F5AF0D.5060409@linutronix.de> <20140821184416.GF10066@atomide.com> <53FE3779.5090908@linutronix.de> <20140827202313.GF16006@atomide.com> <20140828082348.GA5413@linutronix.de> <20140828164645.GG16006@atomide.com> <53FF84DF.7080406@linutronix.de> <20140828225454.GM16006@atomide.com> <540048B4.7010807@linutronix.de> <20140829161221.GO16006@atomide.com> Message-ID: <5400AAF7.5060401@linutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 08/29/2014 06:12 PM, Tony Lindgren wrote: > Looks like the paste bug is there for sure, doing off idle and pasting > 240 characters to the console can hang the UART RX after few attempts, > and pasting 16 charactes won't show up at all if the system is idling. > So you may want to play with that too a bit :) Oh. perfect. Please note that we the threshold moved from 16 to 48. However I see that usually we lose a lot of characters before the uart wakes up and does its job. Usually I see a couple characters but sometimes is see broken characters which suggests that the clock was not (yet) perfect. And I managed not get get it woken once. So let me look at this once I am through with the review responses? > > Regards, > > Tony > Sebastian From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753996AbaH2QcC (ORCPT ); Fri, 29 Aug 2014 12:32:02 -0400 Received: from www.linutronix.de ([62.245.132.108]:48039 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753159AbaH2QcA (ORCPT ); Fri, 29 Aug 2014 12:32:00 -0400 Message-ID: <5400AAF7.5060401@linutronix.de> Date: Fri, 29 Aug 2014 18:31:51 +0200 From: Sebastian Andrzej Siewior User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.0 MIME-Version: 1.0 To: Tony Lindgren CC: balbi@ti.com, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Vinod Koul , Greg Kroah-Hartman , Paul Walmsley Subject: Re: [PATCH 15/15] tty: serial: 8250: omap: add dma support References: <20140815210211.GD9239@atomide.com> <53F5AF0D.5060409@linutronix.de> <20140821184416.GF10066@atomide.com> <53FE3779.5090908@linutronix.de> <20140827202313.GF16006@atomide.com> <20140828082348.GA5413@linutronix.de> <20140828164645.GG16006@atomide.com> <53FF84DF.7080406@linutronix.de> <20140828225454.GM16006@atomide.com> <540048B4.7010807@linutronix.de> <20140829161221.GO16006@atomide.com> In-Reply-To: <20140829161221.GO16006@atomide.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/29/2014 06:12 PM, Tony Lindgren wrote: > Looks like the paste bug is there for sure, doing off idle and pasting > 240 characters to the console can hang the UART RX after few attempts, > and pasting 16 charactes won't show up at all if the system is idling. > So you may want to play with that too a bit :) Oh. perfect. Please note that we the threshold moved from 16 to 48. However I see that usually we lose a lot of characters before the uart wakes up and does its job. Usually I see a couple characters but sometimes is see broken characters which suggests that the clock was not (yet) perfect. And I managed not get get it woken once. So let me look at this once I am through with the review responses… > > Regards, > > Tony > Sebastian